We divide 390592 by 78
We're looking to find how many times 78 goes into 390592.

Going ahead to step 1:
78 can be fit into 3 0 times, resulting in a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 3, we get 3.
Include the next digit (9) from the dividend after 3, then repeat: 39 / 78

Let's proceed to step 2:
39 divided by 78 is 0 with a remainder of 39.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 39 leaves us with 39.
Fetch the next digit (0) from the dividend, attach it to 39 and continue: 390 / 78

Let's proceed to step 3:
390 divided by 78 is 5 with a remainder of 0.
The next digit of our result is 5. 
Result so far: 5.0
If we subtract 390 from 390, we get 0.
Grab the next digit (5) from the dividend, add it to 0, then carry on: 5 / 78

On to step 4:
78 can be fit into 5 0 times, resulting in a remainder of 5.
The next digit of our result is 0. 
Result so far: 50.0
Deduct 0 from 5 and we're left with 5.
Append the next digit (9) from the dividend to 5 and continue with: 59 / 78

Advancing to step 5:
78 can be fit into 59 0 times, resulting in a remainder of 59.
The next digit of our result is 0. 
Result so far: 500.0
Subtracting 0 from 59 leaves us with 59.
Include the next digit (2) from the dividend after 59, then repeat: 592 / 78

Step 6:
78 goes into 592 7 times with a remainder of 46.
The number 7 becomes the next digit in our result. 
Result so far: 5007.0
If we subtract 546 from 592, we get 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Let's proceed to step 7:
460 divided by 78 is 5 with a remainder of 70.
The next digit of our result is 5. 
Result so far: 5007.5
Subtracting 390 from 460 leaves us with 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Step 8:
78 can be fit into 700 8 times, resulting in a remainder of 76.
Write down 8 as next digit of the result. 
Result so far: 5007.58
Subtract 624 from 700 to get 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

Step 9:
78 can be fit into 760 9 times, resulting in a remainder of 58.
The number 9 becomes the next digit in our result. 
Result so far: 5007.589
Subtract 702 from 760 to get 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

On to step 10:
The number 78 fits into 580 7 times, leaving a remainder of 34.
The number 7 becomes the next digit in our result. 
Result so far: 5007.5897
Subtracting 546 from 580 leaves us with 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Advancing to step 11:
78 can be fit into 340 4 times, resulting in a remainder of 28.
Put 4 as the next digit of the answer. 
Result so far: 5007.58974
If we subtract 312 from 340, we get 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Let's proceed to step 12:
78 can be fit into 280 3 times, resulting in a remainder of 46.
Write down 3 as next digit of the result. 
Result so far: 5007.589743
The remainder is 46 after subtracting 234 from 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Going ahead to step 13:
When dividing 460 by 78, we get 5 with a remainder of 70.
Put 5 as the next digit of the answer. 
Result so far: 5007.5897435
Subtracting 390 from 460 leaves us with 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Moving on to step 14:
The number 78 fits into 700 8 times, leaving a remainder of 76.
Use 8 as the next digit of our solution. 
Result so far: 5007.58974358
If we subtract 624 from 700, we get 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

The quotient of the division is 5007.58974358, and the remainder is 7.6e-08.